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TECHNICAL PAPERS

Analysis of a Torsional Fluid Film Vibrator

[+] Author and Article Information
C. V. Suciu, M. D. Pascovici

Department of Machine Elements and Tribology, “Politehnica” University of Bucharest, 313 Splaiul Independentei, 79590 Bucharest 6, Romania

T. Iwatsubo

MS-1 Laboratory, Mechanical Engineering Department, Kobe University 1-1-1 Rokkodai, Nada, 657-8501 Kobe, Japan

J. Tribol 124(3), 480-485 (May 31, 2002) (6 pages) doi:10.1115/1.1454101 History: Received January 04, 2001; Revised June 26, 2001; Online May 31, 2002
Copyright © 2002 by ASME
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References

Figures

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Schematic view of the TFFV
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Case of the plane parallel surfaces
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Geometry of the TFFV in polar coordinates (Γ, θ)
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Reverse flow at the inlet and the outlet of the step
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Photo of the TFFV test rig and the inner jacket
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Structural friction power versus speed (b̄=0.7;s̄=0.15;Ψ=0.0027)
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Theoretical and experimental angular displacement versus time (b̄=0.7;s̄=0.15;Ψ=0.0027;K=4.0 N⋅m;n=4, 8, 12 r.p.s )
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Vibration spectrum, recorded at the critical speed (b̄=0.7;s̄=0.15;Ψ=0.0027;K=4.0 N⋅m;n=8 r.p.s.)
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Theoretical and experimental angular amplitude versus speed (ζ=0.102;s̄=0.15;Ψ=0.0027;b̄=0.7;K=2.9, 4.0, 4.8 N ⋅m )
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Theoretical and experimental angular amplitude versus speed (ζ=0.102;s̄=0.15;Ψ=0.0027;b̄=0.3, 0.5, 0.7, 0.9; K=4.0 N⋅m)
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Amplitude of the dimensionless viscous drag moment versus relative clearance (b̄=0.2, 0.4, 0.6; s̄=0.10; 0.15)

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